CQRlog will not connect to it. The Orion is fixed at 57600 baud 8-bit, 1 stop, no-parity CTS/RTS hand shake enabled. Other programs like GRIG, using hamlib works fine with the Orion.
I suspect that something is broken in the implementation of handshake.
I'm using a USB to RS-232C adapter at /dev/ttyUSB0 on Ubuntu 8.10 Intrepid Ibex.
Best 73 de OZ1PIF, Peter